Selvage-trimmer.



.R. BUTLER & E. A. TINSMAN.-

. Patented July 31, 1917.

2 S I :ETS-SHEET I SELVAGE TRIMM h APPLlCATlON FILED NOV. 29, 1915.

WITNESS \mu m L Wmw A M 5 mm M 0 5 R. BUTLER & E A. TINSMAN.

SELVAGE TRKMMER,

APPLICATH.

Patentmi July 31, 1917.

2 SHEETS-SHEET 2.

. INVENTORJ 25.41? A. YTNEMM B Y E0555 T5072, $414 WITNESS- RGBEBT BUTLER AND EDGAR A. TINSMAIN, 0F BARBERTON, GHIO.

SELVAGE-TRIMMER.

Application filed November 29, 1915.

To all whom it may concern Be it lmown that we, ROBERT Burner and EDGAR A. TINSMAN, citizens of the United States, residing at Barberton, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Selvage-Trimmers, of which the following is a specification.

This invention relates to a selvage trimmer and they invention as shown and described herein comprises an attachment for the calenders or similar machines now in use wherewith the selvage of the rubber fabric may be trimmed as it passes through or from the calendaring rollers.

In the accompanyin drawings, Figure 1 is a sectional view, and Fig. 2 is a side clevation on a reduced scale of a calender having our improved selvage trimmer'attached in working position to the frame thereof opposite the lower calendering roller. Fig. 3 is an enlarged plan view of the attuchment. Fig. 4 is a cross section of the cutterarm and mounting on line l-i, Fig. 6, and Fig. '5 is a similar View showing a modification embodying two cutting disks. Fig. 6

is a side view of one of the cutter brackets and a cross section of the idler roller, and Fig. 7 is a rear View thereof.

Generally the calenders in use comprise a main frame having standards 2 upon and between which a series of calendering rollers 3 are mounted in superposed relations. The rubber stock, a soft rubber called friction rubber, passes between the upper and middle rollers and is applied to the fabric 4 which enters between the middle and lower roller.

Thence the rubber fabric passes to a winding-ro ll 5. Other working parts are embodied in such machines, but as these are well known to those sln'lled in the art and form no part of the present invention only the main and simpler elements are shown. Sufiice to say that when the fabric is rubber-coated and passing to thewinding roll 5 its selvage or border at each side is trimmed. by my improved attachment which is constructed and mounted as follows: Two similar bracket members 6 having journal bosses or open keepers 7 are secured o positely upon projecting pivot bolts 8 ed in the sides of the standards 2 at a point rearwardly of the bottom ealendering roller 3, and a rotatable shaft 9 or idler roller is mounted in the journal bosses, 7 and extends Specification of Letters Patent.

Serial No. 64,047.

' ing parallel with shaft 9 and the rollers 3,

and a cutting or trimming knife or disk 14 is rotatably support/ed upon an arm 15 which is pivoted or him ed for-vertical oscillatory movements a ove the straight stretch of fabric in its passage to the idler roller. The knife arm or bar 15 is also adapt ed to be shifted longitudinally of the idler roller or in other words transversely of the fabric, and for this purpose said arm is pivoted to an ear 16 integral with a boss 17 sleeved to slide upon short shaft 12.

Boss 17. is part of a right-angled base-plate 18 having a flat piece of wood 19 removably seated thereon upon which the fabric is' adapted to rest while passing beneath the knife or disk 14. The edge of the fabric also has running engagement with a guiding shoulder 19 closely adjacent disk 14 and this relationship of parts determines the amount of selvage trimmed from the fabric and is maintained constantly during the running of the fabric by means of a coiled spring 20 sleeved upon short shaft 12 in bearing engagement with an adjustable collar 21 and the slidable boss 17 of base plate 18. This arrangement of parts also afl'ords a convenient way of adjusting the cutters to any width of fabric passing through the machine, and the tension of coiled spring 20 is also adapted to be sensitively regulated.

The base plate 18 has a curved undercut 23 at its outer extremity where'oxtended over tension roller 9 but the roller is uncovred otherwise for the fabric to pass thereround and to permit a bearing roller 24 to ride upon the fabric. This bearing roller 24 is secured to the knife arm 15 and regulates the depth of out of the knife or disk 14, or such depth of cut may be regulated by adjustment of the arm 15 relatively to the base-plate and the fixing of these two parts together by :1 thumb-screw 25 Working in a,

5, two cutting disks b are shown in shearing relations, disk a being 5 mounted, 'ujgon arm at the lootloni of base plate 18 l-Vhes We claim is:

1. ll salvage trimming attachment for calendering machines comprising pivotally mounted brackets and a roller carried thefeby, 21 case plate carried by bracket at each of solo roller and cutting devices secuiecl upon. said base plates adjustable longitudinally of said roller.

A seivage trimming attachment for calendaring machines comprising a roller and o 1m ocali'v mounted bracket therefor liming mil: or cutter members hinge and sliclribly s period through suicl bracket opposite Hie ends of said roller.

3. selvcge trimming attachmentfor (ialtllL'li-illllg machines comprising roller and pivoicl brackets therefor at the ends thereof, menus to lock the said. brackets and we liiona'ey position, and cutie? em. mounted. upon said brackets opposite sairl roller and adopted to be longitudinally adjusted respect to ssicl roller.

l. A selvege trimming attachment for calericlering' machines comprising pivoted. brackets eucl means to lock the same, e she-El:-

roller mounlred in seicl brackets Ell. their ends, and base plates supported on the ends of said shaft and cutting memand disk 7) upon a I hers slidahly supported upon said shaft opposits said roller.

5. A. selvsge trimming attachment for cslenclering mechi es, comprising a, parallel shaft and roller, and a base plate slidably supported upon said shaft opposite said roller, a spring to move said base plate longitudinally of said shaft and roller, and a ti-inuniug device carried by said plate.

b, A selvage Rimming attachment for celez'iclering machines, comprising a bracket having a projecting shaft, a base plate and an adjustable arm sliclahl'y mounted upon said shaft, 11 trimming device carried by said arm, a collar and a coiled spring adjustablymounted upon said shaft to hold said plate in yielding contact With the goods to be trimmed, and o stretching roller for the goods mounted adjacent said plate.

7 A selvcge trimming attachment for cslendering machines, a bracket having a journal hearing for a roller, a shaft projecting from saicl bracket having an adjustable collar thereon, a base plate for the goodsto be trimmed sliclably mounted upon said shaft, a coiled spring upon said shaft between said. collar and plate, in arm hinged upon said plate having a trimming cutter, and, means to lock said arm. adjustebly upon said plate.

In testimony whereof we affix our signatin-es,

ROBERT BUTLER. EDGAR A. TINSMAN. 

